Former Scotland international defender Pressley, 40, is the current manager of Coventry, from whom Town recruited Robins in February 2013.

One of the few men to have played for both Celtic and Rangers, he has been praised for keeping the Sky Blues in League I against the background of last season’s points deduction and their controversial move to groundshare at Northampton.

Mackay, 42, won widespread sympathy after his December sacking by Cardiff, whom he had led to promotion from the Championship in 2012-13.

He had come under criticism from club owner Vincent Tan concerning signings, transfer budgets, results and style of play.